TL;DR
The SunZia Wind Project in New Mexico, the largest wind farm in the United States, is set to begin commercial operations in June 2026. With 916 turbines and a capacity of 3,650 MW, it significantly expands the nation’s renewable energy infrastructure, primarily exporting power to Arizona and California.
The SunZia Wind Project in New Mexico, the largest wind farm in the United States with a capacity of 3,650 megawatts, is officially commencing commercial operations in June 2026. This development marks a significant milestone in the country’s renewable energy expansion and will supply power primarily to Arizona and California.
Constructed by Pattern Energy, the SunZia Wind Project has taken nearly two decades of permitting and planning before reaching this operational phase. The farm consists of 916 turbines spread across three counties in New Mexico, with 242 turbines in San Miguel and Lincoln counties and 674 in Lincoln and Torrance counties.
With a net summer capacity of 3,650 MW, SunZia surpasses the next largest wind farms in the US—Alta Wind in California (1,098 MW) and Great Prairie in Texas (1,027 MW)—by more than three times. The project is connected via a high-voltage transmission line to deliver electricity to Arizona and California, with a 550-mile high-voltage direct current line built specifically for this purpose.
By April 2026, some turbines had begun producing power during testing phases, and the project’s full commercial operation is now underway. Once fully operational, SunZia will increase New Mexico’s total wind capacity from 3,997 MW to 7,647 MW, making wind energy account for approximately 45% of the state’s capacity, alongside solar and natural gas sources.
Impacts on US Renewable Energy and Power Exporting
The start of commercial operations at SunZia represents a major step in the US’s transition to renewable energy, significantly increasing wind capacity and enabling large-scale power exports to neighboring states. This project exemplifies the growing importance of wind energy in the national grid and highlights the strategic infrastructure investments needed to facilitate clean energy transmission across state lines.
By exporting a substantial portion of its generated power, SunZia supports regional decarbonization efforts and reduces reliance on fossil fuels in California and Arizona. The project also underscores the economic and environmental benefits of large-scale renewable infrastructure, including job creation during construction and operation, and the reduction of greenhouse gas emissions.

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Background and Development Timeline of SunZia
The SunZia Wind Project has undergone nearly two decades of permitting, planning, and construction, reflecting the complexity of developing large-scale renewable infrastructure in the US. Construction began in 2023, with the project spanning three counties in New Mexico, and involved building a 550-mile transmission line to export power to Arizona and California.
Prior to SunZia, New Mexico’s wind capacity was approximately 3,997 MW. The addition of SunZia’s 3,650 MW nearly doubles the state’s wind capacity, positioning New Mexico as a national leader in wind energy. The project’s capacity is more than three times that of the next largest wind farms in the country, emphasizing its significance in US renewable energy infrastructure.
In 2024, CAISO reported a record hourly wind generation of 5,922 MW, and in May 2026, it reached 7,122 MW, with SunZia contributing significantly to this increase, demonstrating the project’s immediate impact on grid capacity and renewable energy integration.
“The SunZia Wind Project is a game-changer for renewable energy in the US, setting new benchmarks for capacity and export potential.”
— an anonymous researcher

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Remaining Questions About Operational Capacity and Export
While SunZia has begun commercial operations, it is still unclear how quickly the full capacity will be reached across all turbines and how the actual export volumes will compare to projections. Additionally, the long-term operational performance and maintenance challenges remain to be seen as the project matures.

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Next Steps for SunZia and Regional Grid Integration
Over the coming months, operators will focus on ramping up full capacity and optimizing transmission to maximize exports. Monitoring data from CAISO and other grid operators will reveal the project’s impact on regional power supplies. Further updates on performance and capacity utilization are expected as the project stabilizes.

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Key Questions
When did SunZia begin commercial operations?
SunZia officially started commercial operations in June 2026, after testing phases earlier in the year.
How much capacity does SunZia add to New Mexico’s wind energy?
It adds 3,650 MW, nearly doubling the state’s previous wind capacity of 3,997 MW.
Where is the power generated by SunZia transmitted?
The power is primarily exported to Arizona and Southern California via a 550-mile high-voltage transmission line.
What is the significance of SunZia for US renewable energy goals?
It represents a major step toward increasing renewable capacity and facilitating cross-state clean energy exports, supporting national decarbonization efforts.
Are all turbines operational now?
While some turbines have begun producing power during testing, full operational capacity is expected to ramp up over the coming months.
Source: CleanTechnica